Question

Assertion (A): Equatorial forests are called the lungs of the world.

Reason (R): Equatorial forests are the densest forests of the world.

Options

• Both A and R are true, and R is the correct reason for A.

• Both A and R are true, but R is not the correct reason for A.

• A is true, and R is false.

• A is false, and R is true.

Answer 1

Both A and R are true, but R is not the correct reason for A.

Explanation:

Equatorial (tropical) rainforests are often called the “lungs of the world” because they absorb large amounts of carbon dioxide and produce oxygen through photosynthesis. They are also described as dense, thick, and luxuriant forests (so the statement that they are the densest forests is essentially true). However, the reason they are called the lungs of the world is their role in gas exchange (CO₂ uptake and O₂ release), not simply because they are dense; therefore, R is not the correct reason for A.